<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>Hellow world</title>
		<script>
			//alert('Hello world')
			//https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String
			console.log('打印...%d',1+1)
			document.write("你猜我在哪里") //写入到body标签内
		</script>
	</head>
	<body>
	</body>
</html>